Note: This repository provides "postgresql", "postgresql-contrib", and "postgresql-client" meta-packages that depend on the latest postgresql-x.y, ... packages, similar to the ones present in Debian and Ubuntu. Once a new PostgreSQL version is released, these meta-packages will be updated to depend on the new version. If you rather want to stay with a particular PostgreSQL version, you should install specific packages like "postgresql-10" instead of "postgresql".